866507670466120 has 16 divisors (see below), whose sum is σ = 1949642258548860. Its totient is φ = 346603068186432.

The previous prime is 866507670466051. The next prime is 866507670466171. The reversal of 866507670466120 is 21664076705668.

It can be written as a sum of positive squares in 2 ways, for example, as 866254514568804 + 253155897316 = 29432202^2 + 503146^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10831345880787 + ... + 10831345880866.

Almost surely, 2^{866507670466120} is an apocalyptic number.

It is an amenable number.

866507670466120 is an abundant number, since it is smaller than the sum of its proper divisors (1083134588082740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

866507670466120 is a wasteful number, since it uses less digits than its factorization.

866507670466120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21662691761664 (or 21662691761660 counting only the distinct ones).

The product of its (nonzero) digits is 121927680, while the sum is 64.

The spelling of 866507670466120 in words is "eight hundred sixty-six trillion, five hundred seven billion, six hundred seventy million, four hundred sixty-six thousand, one hundred twenty".